Air flows counterclockwise and inward for all low pressure systems in the Northern Hemisphere and clockwise and inward in the Southern Hemisphere. And high pressure systems flow clockwise and outward in the Northern Hemisphere and in the Southern Hemisphere they flow counterclockwise and outward.
Given :
Mass of toluene: 55.0 g
Density of toluene: 0.87 g/mL
Now we know Volume = mass/density
Substituting these values we get
Volume = 55.0 g÷0.87 g/mL
Volume = 63.22 mL
Reaction on positive electrode (cathode):
PbSO₄₍s₎ + 2H₂O₍l₎ → 2e⁻ + PbO₂₍s₎ + 4H⁺₍aq₎ + SO₄²⁻₍aq₎.
s - solid.
l - liquid.
aq - dissolve in water.
PbSO4 is converted to Pb at one electrode (anode) and to PbO₂ at the other (cathode). Lead battery can be recharged, during recharging, an external source of energy is used.
Hi, I noticed no ones helped you yet so I'll try to. We can remove the third option because if the water evaporates then there will be no mass (Obviously.) It becomes a gas and I don't think gas has a great mass. (It rhymes too.) The last option seems logically correct for me. If you freeze water, it will continue to weigh the same. Same with boiling water; the mass stays the same. I would go with "Adding more water will increase the mass". Hope I helped you! Good Luck!